Dummy router for Jooma Blank Component causing no 404 pages

explanation.md

Reproduce the issue:

• You have Blank Component assigned to the home page of your Joomla! site.
• When you manually enter a wrong url you don't get any 404 error. Your site redirects all the non-existing urls to the home page.

Explanation

Joomla redirects all the non-existing urls to the router of the component assigned as home page. Blank component does not have a router so you just get redirected to the home page.

This is a dummy empty router that will force an empty option be set if the component router is called to parse any url. This should not break anything because Blank Component cannot work without a menu item assigned to it. It only ensures that the router does not parse any url.

Instructions

Copy the router.php file into your site /components/com_blankcomponent folder.

router.php

<?php
/**
 * @package     BlankComponent.Frontend
 * @subpackage  Router
 *
 * @copyright   Copyright (C) 2017 Roberto Segura López. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('_JEXEC') or die;

/**
 * Routing class from com_blankccomponent
 *
 * @since  3.0.1
 */
class BlankComponentRouter extends JComponentRouterBase
{
	/**
	 * Build the route for the com_reditem component
	 *
	 * @param   array  $query  An array of URL arguments
	 *
	 * @return  array  The URL arguments to use to assemble the subsequent URL.
	 */
	public function build(&$query)
	{
		return array();
	}

	/**
	 * Parse the segments of a URL.
	 *
	 * @param   array  $segments  The segments of the URL to parse.
	 *
	 * @return  array  The URL attributes to be used by the application.
	 */
	public function parse(&$segments)
	{
		return array('option' => null);
	}
}